^^I agree. I'm going with Hebi Sasuke high difficulty as well.
The part of Yomi Numa which Sasuke will be standing on can be deactivated via chidori Nagashi. Jiraiya and Bunta's collaboration can be defended/healed from when in CS2 considering Sasuke in base brushed off a katon from Madara and brushed off Itachi's katon with CS1. Jiraiya's collaboration is far stronger, but most of its strength increase is due to its increase in AoE which are irrelevant when it comes to dealing damage on small targets. Sasuke can sacrifice snakes which can coil around him to defend against the katon. If Jiraiya decides to keep on spamming this until Sasuke runs out of chakra, Jiraiya will end up playing in Sasuke's hands by prepping Kirin. Jiraiya's hair techs whether used offensively or defensively are useless against chidori sharp spear.
Furthermore, Gamabunta can possibly be placed in a genjutsu which can allow Sasuke to close the distance while he has Bunta shake Jiraiya off his back.